JP6280055B2 - Elevator hoist and method for installing elevator hoist - Google Patents

Description

  The present invention relates to an elevator hoist and an elevator hoist installation method.

  In recent elevator apparatuses, a machine room for storing machinery such as an elevator hoist (hereinafter abbreviated as hoist) is not provided in the upper part of the hoistway for the purpose of suppressing the height of the building. Therefore, so-called machine room-less elevator devices in which machinery is provided in a hoistway are widespread.

  In the case of this machine room-less elevator device, all devices including the hoisting machine conventionally installed in the machine room are installed in the hoistway. There are various configurations for installing the hoisting machine in the hoistway, but in order to install the hoisting machine in the hoistway, it is necessary to reduce the weight of the hoisting machine. Of course, the weight reduction of the hoisting machine is also required in an elevator apparatus provided with a conventional machine room.

  In addition, when installing the hoisting machine, it is transported by an existing elevator or lifted by a chain block, etc., but the hoisting machine weight exceeds the load capacity of the existing elevator or the allowable load of the chain block. In such a case, the factory is shipped with the electromagnetic brake removed from the hoist, and the electromagnetic brake is reassembled after the hoist is installed on site. In this case, it is desired to reduce the variation in brake performance for each delivery destination by improving the reassembly performance of the electromagnetic brake on site and ensuring the reassembly accuracy equivalent to that of the factory regardless of who assembles it.

  As a conventional hoisting machine, for example, the one described in Patent Document 1 is known. In this conventional hoisting machine, a rotor block is formed by integrating a rotor of an electric motor, a driving sheave for winding up a hoisting main rope, and a braking disk of a disc brake. Further, the rotating body block is rotated by the magnetic force acting between the stator and rotor of the electric motor provided on the base block, and the rotating body block is rotated by pressing the friction material of the disk brake against the side surface of the braking disk. Stop.

  The conventional hoisting machine includes two electromagnetic brake devices independent of the brake disk in order to ensure a predetermined amount of braking force applied to the brake disk. Further, the electromagnetic brake device is fixed to the casing of the hoisting machine with a shaft or a bolt.

JP 2004-299824 A

  In the above-described conventional hoisting machine, the diameter of the fixing hole provided in the housing for passing the shaft or bolt used for fixing the electromagnetic brake device is generally the diameter of the shaft or bolt in consideration of manufacturing errors of parts. Is set to a larger value. For this reason, when the electromagnetic brake device is reassembled and fixed to the hoisting machine at the site where the hoisting machine is installed, the fixing position is likely to vary by the difference in diameter. As a result, there is a problem that brake performance such as braking force and braking timing varies. In addition, if it is attempted to increase the mounting accuracy with a dedicated jig, it is necessary to deploy and manage the dedicated jig, which may affect the cost.

  Therefore, the present invention provides an elevator hoisting machine and an elevator hoisting machine installation method capable of improving the workability of the electromagnetic brake device attaching work and improving the attaching accuracy.

  In order to solve the above-described problems, an elevator hoist according to the present invention includes a housing, a sheave attached to the housing and on which a main rope is wound, an electric motor that rotates the sheave, and a sheave. A brake disc that is integrated and rotates together with the sheave, and an electromagnetic brake device that brakes the brake disc. The electromagnetic brake device includes a pair of brake shoes that brake the brake disc and one of the pair of brake shoes. An arm that supports the other of the pair of brake shoes, and an electromagnetic drive unit that drives the armature. The electromagnetic brake device includes a housing through at least two shaft members. The shaft member is attached to the body, and the shaft member is inserted into the electromagnetic brake device and the housing to support the electromagnetic brake device so as to be movable in the axial direction. There together withdrawn from the housing, with the insertion into the electromagnetic brake device of the support shaft is held, it has a fixing means for fixing the support shaft to the electromagnetic brake device.

  In order to solve the above-described problem, an elevator hoisting machine installation method according to the present invention is an elevator hoisting machine including an electromagnetic brake device installed at an installation location. The shaft member is attached to the casing of the elevator hoisting machine, and the shaft member is inserted into the electromagnetic brake device and the housing, and has a support shaft that supports the electromagnetic brake device so as to be movable in the axial direction. The electromagnetic brake is removed from the elevator hoisting machine, and is carried into the installation place in a state where the support shaft is inserted and fixed in the electromagnetic brake device.

  According to the present invention, the shaft member can be detached from the elevator hoisting machine while being fixed to the electromagnetic brake device, and can be reassembled at the installation location, so that the workability of the electromagnetic brake device attachment work can be improved and the attachment accuracy can be improved. .

  Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

1 shows an overall configuration of a hoist according to an embodiment of the present invention. It is BB sectional drawing in the right view in FIG. The attachment structure of the electromagnetic brake device of a comparative example is shown. The state at the time of brake braking of an electromagnetic brake device is shown. The state when the brake of the electromagnetic brake device is released is shown. The state which the electromagnetic brake device in this embodiment is attached to the hoisting machine is shown. It is the view B which looked at the B side in Fig.6 (a) from the arrow direction. It is the view C which looked at the C side in Fig.6 (a) from the arrow direction. The state at the time of removing and dispatching the electromagnetic brake device in this embodiment is shown. It is the view D which looked at the D side in Fig.7 (a) from the arrow direction. It is the view E which looked at the EE side in Fig.7 (a) from the arrow direction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows the overall configuration of a hoist according to an embodiment of the present invention. In FIG. 1, the drawings shown on the left side, center, and right side are a left side view, a front view, and a right side view, respectively, of the hoisting machine. 2 is a cross-sectional view taken along the line BB in the right side view of FIG.

  As shown in FIGS. 1 and 2, the hoisting machine 10 is provided integrally with the housing 1, the sheave 14 that is rotatably attached to the housing 1, and on which the rope is wound, and the sheave 14. The brake disc 26 is configured to rotate and the electromagnetic brake device 15 that brakes the brake disc 26 is provided.

  As shown in FIG. 2, the housing 1 is formed with an annular storage recess 21 on the front side, and a cylindrical support wall 17 projects from the tip of a boss 16 positioned at the center of the storage recess 21. ing. A shaft hole 18 is formed at the axial center position of the support wall 17 and the boss portion 16 so as to penetrate the housing 1. A stator 22 of the electric motor 7 is attached to the inner surface of the outer peripheral wall of the storage recess 21. The stator 22 has a winding and generates a rotating magnetic field by passing an alternating current through the winding.

  The sheave 14 and the brake disk 26 constitute the rotating body block 2 together. The rotating body block 2 has a substantially disk shape as a whole, and its shaft center portion is supported by the main shaft 19 via a bearing 23 and its outer peripheral edge portion becomes a brake disk 26. The rotor 31 of the electric motor 7 is extended on one side surface of the rotating body block 2, and the sheave 14 for operating the hoisting rope is fixed to the other side surface of the rotating body block 2 with bolts or the like. . The sheave 14 is not limited to fixing with bolts or the like, but may be fixed by shrink fitting.

  The rotor 31 of the electric motor 7 includes a cylindrical wall 24 formed integrally with the rotating body block 2 and a permanent magnet 25 fixed to the inner peripheral wall of the cylindrical wall 24. The rotor 31 is inserted into the housing recess 21 of the housing 1, and the magnetic action surfaces of the rotor 31 and the stator 22 are opposed in the radial direction with an air gap interposed therebetween. The rotor 31 is rotated by the electromagnetic force between the rotating magnetic field generated by the stator 22 and the permanent magnet.

  Electromagnetic brake devices 15 are respectively provided at both corners of the upper portion of the housing 1. That is, the hoisting machine 10 of the present embodiment includes two electromagnetic brake devices 15. Thereby, a braking force can be ensured or a braking device can be substantially multiplexed. As will be described in detail later, the electromagnetic brake device 15 includes a pair of brake shoes 27a and 27b, an amateur 28 that holds one brake shoe 27a, a brake body (reference numeral 33 in FIG. 6) that holds the other brake shoe 27b, and the like. Composed.

  Here, the comparative example compared with this embodiment mentioned later is demonstrated using FIGS. 3-5 first. In this comparative example, the configuration other than the electromagnetic brake device mounting structure and the braking operation are the same as those in the present embodiment described later. The overall configuration of this comparative example is the same as that of this embodiment shown in FIG.

  FIG. 3 shows the mounting structure of the electromagnetic brake device of this comparative example. In FIG. 3, A part corresponds to an enlarged plan view of a main part viewed from the A direction in FIG. 1, B part is a plan view of shaft member 5 in A part, and C part is a right side of shaft member 5 in B part. FIG.

  In the comparative example shown in FIG. 3, one electromagnetic brake device 15 is attached to the housing 1 by two shaft members 5 so as to be movable in the axial direction. More specifically, the brake body 33 is provided with two through holes 33a for inserting the shaft member 5 therein. The shaft member 5 is for fixing and supporting the electromagnetic brake device 15 to the housing 1, and as shown in the B part and the C part, a round bar-like support shaft 37 inserted into the through hole 33a, and A disc-shaped flange 38 provided on the rear end side (one end side) of the support shaft 37 is integrated with a mounting bolt 40.

  A screw hole 37 a is formed in the front end surface (the other end side) of the support shaft 37. After the shaft member 5 is inserted into the mounting hole 1b provided in the mounting portion 1a of the housing 1, the fixing bolt 46 is attached to the screw hole 37a via the fixing plate 39 attached to the mounting portion 1a with a bolt or the like. The body 1 and the shaft member 5 are fixed.

  A stopper bolt 35 is fixed to the flange 38 to keep the gap between the brake disc 26 and the left and right brake shoes 27a, 27b equal. The stopper bolt 35 abuts on a pin 34 that protrudes from the armature 28 in the radial direction, thereby limiting the amount of movement of the armature 28 and equalizing the gap between the left and right brake shoes 27a, 27b (see FIGS. 4 and 5). Keep on. The direction of the rotation direction is appropriately adjusted with respect to the support shaft 37 so that the stopper bolt 35 reliably comes into contact with the pin 34 that protrudes from the armature 28 in the radial direction. For this reason, a hexagonal portion 45 is provided in a part of the support shaft 37, and a centering adjustment in the rotational direction can be performed by inserting a spanner or the like into the hexagonal portion 45. Further, the hexagonal portion 45 prevents the support shaft 37 from spinning around when the distal end side of the support shaft 37 is fixed to the mounting portion 1 a of the housing 1 by the fixing bolt 46 via the fixing plate 39.

  In this comparative example, when the positions of the stopper bolt 35 and the pin 34 are shifted, if the orientation adjustment in the rotation direction of the support shaft 37 is poor, the gap between the brake disc 26 and the left and right brake shoes 27a, 27b is set. It is not possible to keep the same, and regular braking performance cannot be obtained.

  Next, a braking mechanism and a braking operation of the electromagnetic brake device of this comparative example will be described with reference to FIGS. 4 and 5. FIG. 4 shows a state when the electromagnetic brake device is braked, and FIG. 5 shows a state when the electromagnetic brake device is released. The braking mechanism and the braking operation are the same as in the comparative example in the embodiments described later.

  As shown in FIG. 4, the electromagnetic brake device includes a pair of brake shoes 27a and 27b for pressing the outer peripheral side surface of the brake disk 26 to brake the brake disk 26, and an amateur 28 for holding one brake shoe 27a. In order to apply a braking force to the sheave 14 (FIG. 1), a brake spring 36 that biases the armature 28 toward the brake disc 26 (direction C in FIG. 4), and the brake spring 36 is compressed to compress the brake disc 26. And an electromagnetic drive unit 29 that opens the brake shoes 27a and 27b from the outer peripheral side surface to make the sheave 14 rotatable. The electromagnetic drive unit 29 is fixed directly to the brake body 33 by a fixing bolt (not shown) or indirectly through another mounting member. The other brake shoe 27 b is fixed to the brake body 33 directly or indirectly through another mounting member, and the brake shoe 27 b brakes or releases the other outer peripheral side surface of the brake disc 26.

  The electromagnetic drive unit 29 functions as an electromagnet for electromagnetically attracting the armature 28, and is composed of a combination of an electromagnetic coil and an iron core (not shown). A material having a high magnetic permeability (for example, carbon steel) is used for the iron core. In the brake braking state shown in FIG. 4, no current is passed through the electromagnetic coil, and the electromagnet does not generate a magnetic force, so the electromagnetic drive unit 29 does not attract the armature 28. For this reason, the brake spring 36 presses the first assembly 43 (lower right hatched portion) of the armature 28 and the brake shoe 27a provided in the electromagnetic brake device toward the brake disk 26 (C direction in the figure). As a result, the brake shoe 27a strongly presses one outer peripheral side surface (the right side surface in the figure) of the brake disc 26. At this time, the brake spring 36 is not yet extended, and the spring force remains. Accordingly, the reaction force causes the brake body 33 and the second assembly 44 (upwardly hatched portion) of the electromagnetic drive unit 29 to move in the opposite direction (D direction in the figure), and the other brake shoe 27b provided on the brake body 33. Strongly presses the other outer peripheral side surface (the left side surface in the figure) of the brake disk 26. As a result, the brake disc 26 is clamped from both sides by the brake shoes 27a and 27b, so that the sheave 14 is maintained in the braking state.

  As shown in FIG. 5, when the brake is released, the iron core is excited by flowing a current through the electromagnetic coil of the electromagnetic drive unit 29 and attracts the armature 28. The brake shoe 27a is driven in a direction away from the brake disk 26 (D direction in the figure) against the spring force. That is, the first assembly 43 moves to the electromagnetic drive unit 29 side (D direction in the figure), and one braking force against the brake disc 26 by the brake shoe 27a is released.

  Next, the pin 34 provided on the armature 28 comes into contact with the stopper bolt 35 fixed to the flange portion 38 of the support shaft 37. At this time, the armature 28 and the electromagnetic driving portion 29 are not yet in close contact with each other. Therefore, the second assembly 44 moves in the reverse direction (C direction in the figure), and the brake shoe 27b provided on the brake body 33 is driven in the direction away from the brake disk 26 (C direction in the figure). Thereby, the other braking force with respect to the brake disc 26 by the brake shoe 27b is cancelled | released.

  Since the brake releasing operation as described above is performed at high speed, if a clearance is generated between the pin 34 and the stopper bolt 35 due to the reaction when the pin 34 collides with the stopper bolt 35, that is, If both the first assembly 43 and the second assembly 44 move to the left (C direction) in the figure, the brake disk 26 and the brake shoe 27a will be in contact with each other even after the braking force is released. In order to prevent this, the pin 34 and the stopper are pulled by pulling the first assembly 43 and the second assembly 44 to the right (D direction) in FIG. The bolts 35 are always in close contact with each other. Here, the protrusion of the stopper bolt 35 toward the pin 34 is adjusted so that the gaps X between the brake disk 26 and the brake shoes 27a and 27b are equal.

  In the brake release state shown in FIG. 5, when the energization of the electromagnetic coil of the electromagnetic drive unit 29 is interrupted, the electromagnetic drive unit 29 is demagnetized, so that the brake braking state shown in FIG. 4 is entered. That is, the pair of brake shoes 27a and 27b are pressed against the outer peripheral side surface of the brake disc 26, and the sheave 14 is braked.

  Hereinafter, the electromagnetic brake device in the hoist according to the embodiment of the present invention shown in FIGS. 1 and 2 is appropriately described with reference to FIGS. 6 (a) to 6 (c) and FIGS. 7 (a) to 7 (b). This will be described in comparison with the comparative example.

  Fig.6 (a) shows the state by which the electromagnetic brake device in this embodiment is attached to the hoisting machine. Moreover, FIG.6 (b) is the view B which looked at the B side in FIG.6 (a) from the arrow direction, FIG.6 (c) looked at the C side in FIG.6 (a) from the arrow direction. FIG.

  The electromagnetic brake device 15 is attached to the housing 1 by the shaft member 5 as in the comparative example. Unlike the comparative example, a fixing collar 50 is fixed to the housing 1 in advance with a color fixing bolt 51. . A screw hole 37 a is formed in the distal end surface of the support shaft 37. After the shaft member 5 is inserted into the mounting hole 1b provided in the mounting portion 1a of the housing 1, the shaft member 5 is secured to the housing by screwing the fixing bolt 46 inserted into the fixing collar 50 into the screw hole 37a. 1 is fixed. Further, unlike the comparative example, the floating bolt 49 that constitutes the floating device is further extended from a portion provided with a screw thread 53 used at the time of attachment to the hoisting machine. A screw thread 54 is provided for use during shipping and transportation. As shown in FIG. 6A, the floating bolt 49 is fixed to the body 33 by a screw thread 53 and two fixing nuts 55 when attached to the hoisting machine.

  FIG. 7A shows a state in which the electromagnetic brake device according to the present embodiment is removed and shipped and carried into the installation place. 7B is a view D of the D side in FIG. 7A viewed from the arrow direction, and FIG. 7C is the EE side in FIG. 7A from the arrow direction. FIG.

  The electromagnetic brake device is subjected to tests such as brake performance after being attached to the housing 1 at a manufacturing location such as in a factory. Thereafter, when the electromagnetic brake device is removed from the housing 1 and shipped and transported from the manufacturing site to the installation site, the fixing bolt 46 (FIG. 6A) is removed as shown in FIG. At the same time, the thread 53 and the nut 55 are unscrewed, and the shaft member 5 is pulled out until the tip end surface of the support shaft 37 is separated from the housing 1, and in this state, the shaft member 5 further moves in the direction of removal. The floating bolt 49 is fixed to the body 33 by a thread 54 and two fixing nuts 55 provided at the tip of the floating bolt 49 of the floating device. In this state, the electromagnetic brake device is separated from the hoisting machine so that the brake disc can be removed from between the brake shoes. That is, the electromagnetic brake device is removed from the hoisting machine without removing the shaft member 5 from the body 33 of the electromagnetic brake device. At this time, the support shaft 37 is fixed to the flange portion 38, and the floating bolt 49 inserted through the flange portion 38 is fixed to the brake body 33. Is retained. For this reason, the positioning state in the rotational direction around the axis of the body 33 and the shaft portion 5 of the electromagnetic brake device in the attached state to the housing 1 is maintained. Therefore, the proper positional relationship in the rotation direction of the stopper bolt 35 and the pin 34 is also maintained.

  Here, the screw thread 54 is provided at a position such that the tip surface of the support shaft 37 is removed from the housing 1 by itself when the screw thread 54 and the nut 55 are screwed together in the floating bolt 49. In the present embodiment, the front end surface of the support shaft 37 is provided in a position hidden behind the through hole of the body 33 and completely separated from the mounting portion of the housing 1. Further, the length of the thread 54 is a minimum required length that is slightly larger than the total thickness of the two fixing nuts 55 (for example, larger than the total thickness and smaller than twice the total thickness). Thus, the portion of the floating bolt 49 between the screw thread 53 and the screw thread 54 is smaller in diameter than the screw thread diameter of the fixing nut 55 and no thread is formed. As a result, after unlocking the fixing nut 55 and the thread 53, the fixing nut 55 is moved to the position of the thread 54 without turning, and the fixing nut 55 is screwed with the thread 54 in a shorter time. can do. Thereby, the time which the operation | work which removes an electromagnetic brake device from a hoisting machine can be suppressed. Also, when the electromagnetic brake device is attached to the hoisting machine at the installation location, the working time can be similarly reduced. Note that the same fixing nut 55 is used during shipping / transportation and installation. For this reason, the number of dedicated members for shipping and transportation can be suppressed.

  At the time of shipping / transporting / carrying in, the shaft member 5 is removed from the mounting hole of the housing 1 as described above, and the fitting portion of the support shaft 37 with the body 33 is exposed. If the fitting portion is scratched or foreign matter such as dust adheres during shipping and transportation, the smooth operation of the electromagnetic brake device is hindered. Therefore, in the present embodiment, as shown in FIG. 7A, the fitting portion of the support shaft 37 with the body 33 is covered with the curing member 60. The curing member 60 fixes the shaft member 5 without moving in either the direction of removal from the body 33 or the insertion direction during shipping and transportation, and protects the surface of the fitting portion. Thereby, the damage to the fitting part at the time of dispatch and conveyance and adhesion of a foreign material can be prevented. In addition, as the curing member 60, for example, a resin sheet that does not generate dust or the like can be applied.

  The fixed collar 50 is fixed to the housing 1 without being removed at the time of shipment / transportation and installation after the electromagnetic brake device is attached to the housing 1 in the manufacturing site. In this fixed collar 50, the cross-sectional shape cut by the plane orthogonal to the axial direction of the inner surface of the hole that fits the tip of the support shaft 37 is an arc portion and a straight portion 57 as shown in FIG. It has the shape which consists of. The shape perpendicular to the axial direction of the tip portion of the support shaft 37 is the same shape. Therefore, when the tip of the support shaft 37 and the hole of the fixed collar 50 are fitted, the support shaft 37 is reliably inserted to an appropriate position in the housing 1 and the support shaft 37 rotates with respect to the collar 50. There is no degree of freedom. Thereby, the support shaft 37 is positioned with respect to the housing 1. Therefore, if the fixed collar 50 is shipped, transported and carried in without removing it, and the tip of the support shaft 37 and the hole of the fixed collar 50 are fitted together, the electromagnetic brake is attached to the hoisting machine at the manufacturing site. The position of the shaft portion 5 with respect to the housing 1 is reproduced. Furthermore, as described above, the floating bolt 49 and the fixing nut 55 maintain the positioning state of the electromagnetic brake device and the shaft portion 5 when the electromagnetic brake is attached to the hoisting machine at the manufacturing site. Therefore, if the screw thread 53 and the nut 55 of the floating bolt 49 are screwed again at the installation location, the position of the shaft portion 5 with respect to the housing 1 due to the fitting of the tip end portion of the support shaft 37 and the hole portion of the fixed collar 50. In combination with the reproduction, the positioning state of the electromagnetic brake device with respect to the housing 1 when the electromagnetic brake device is attached to the housing 1 in the manufacturing location is reproduced at the installation location.

  In the present embodiment, the cross-sectional shape of the support shaft 37 and the fixed collar 50 is a symmetrical shape having two arc portions and two straight portions, but is not limited thereto, and at least one straight portion is included. If the tip of the support shaft 37 and the fixed collar 50 are fitted, the support shaft 37 may have a shape that does not have a degree of freedom of rotation with respect to the collar 50, for example, a polygon such as a triangle.

  As described above, according to the present embodiment, when the electromagnetic brake device is removed from the hoisting machine and shipped, transported, and carried to the installation location, the electromagnetic brake device including the shaft member that is a fixing component is also included. By shipping as an assembly without disassembling, the assembly work time at the installation location can be reduced, and the assemblability can be improved. In addition, since the shaft member is shipped and transported while being inserted into the electromagnetic brake device, it is not necessary to insert the shaft member at the installation location, thereby preventing the shaft surface from being damaged by foreign matter adhering to the shaft member surface when the shaft member is inserted. be able to. In addition, if reassembled at the installation location, the positioning state when the electromagnetic brake device is attached to the hoisting machine can be reproduced at the manufacturing location, so no special jigs or the like can be used. In addition, it is possible to reproduce the brake mounting core when assembled in the manufacturing site. Therefore, since the mounting accuracy at the time of reassembly at the installation location can be improved, variations in brake performance can be reduced.

  In the above embodiment, the fixing part for fixing the shaft part 5 to the brake body 33 when the electromagnetic brake device 15 is removed from the hoisting machine at the time of shipping, transporting and carrying in, that is, a component including the floating bolt 49 and the flange part 38. Doubles as a floating device. Therefore, the increase in the number of parts, the device size, and the cost of the electromagnetic brake device by providing the fixing means is suppressed.

  In addition, this invention is not limited to embodiment mentioned above, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  For example, the hoisting machine of this embodiment can be applied to both a machine room-less elevator device and a machine room elevator device. Moreover, in the said embodiment, although the electromagnetic brake apparatus 15 was fixed to the housing | casing 1 using the two shaft members 5, the number of the shaft members 5 is not limited to this, For example, of an electromagnetic brake apparatus You may use 3 or more according to a weight, a shape, etc.

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a Attaching part 5 Shaft member 10 Hoisting machine 14 Sheave 15 Electromagnetic brake device 26 Brake disk 27a, 27b Brake shoe 28 Amateur 33 Brake body 35 Stopper bolt 37 Support shaft 37a Screw hole 38 ridge part 39 Fixing plate 42 Floating Device 45 Hexagon part 46 Fixing bolt 49 Floating bolt 50 Fixing collar 51 Collar fixing bolt 53, 54 Thread 55 Fixing nut 60 Curing member

Claims (9)

A housing,
A sheave attached to the housing and wound with a main rope;
An electric motor for rotationally driving the sheave;
A brake disc integrated with the sheave and rotating with the sheave;
An electromagnetic brake device for braking the brake disc;
With
The electromagnetic brake device is
A pair of brake shoes for braking the brake disc;
An amateur supporting one of the pair of brake shoes;
A body that supports the other of the pair of brake shoes;
An electromagnetic drive unit for driving the amateur;
In an elevator hoisting machine including
The electromagnetic brake device is attached to the housing via at least two shaft members,
The shaft member is
A support shaft that is inserted into the electromagnetic brake device and the housing and supports the electromagnetic brake device so as to be movable in an axial direction;
Fixing means for fixing the support shaft to the electromagnetic brake device in a state in which the support shaft is extracted from the housing and the insertion of the support shaft into the electromagnetic brake device is held;
An elevator hoisting machine characterized by comprising:   2. The support shaft according to claim 1, wherein the support shaft is inserted into the electromagnetic brake device and the housing in a state where the support shaft is pulled out from the housing and the insertion of the support shaft into the electromagnetic brake device is held. The elevator hoisting machine is characterized in that the position of the shaft member in the rotational direction around the axis of the support shaft with respect to the electromagnetic brake device in a state of being held is held by the fixing means. In claim 1 or claim 2,
The fixing means includes
A collar provided at one end of the support shaft;
A bolt that is inserted through the collar and fixed to the body by a nut;
An elevator hoisting machine characterized by comprising: In claim 3,
The bolt is
A first screw portion screwed into the nut in a state where the support shaft is inserted into the electromagnetic brake device and the housing;
A second screw portion screwed with the nut in a state where the support shaft is extracted from the housing and the insertion of the support shaft into the electromagnetic brake device is held;
An elevator hoisting machine characterized by comprising:   5. The portion of the bolt between the first screw portion and the second screw portion does not have a screw portion and has a diameter smaller than the diameters of the first and second screw portions. An elevator hoisting machine characterized by comprising:   5. The elevator hoist according to claim 4, wherein the bolt and the flange portion constitute a floating device of the electromagnetic brake device. In claim 1 or claim 2,
The housing includes a fixing collar that fits with a tip end portion of the support shaft, and the support shaft has no degree of freedom of rotation with respect to the collar in a state of being fitted to the fixing collar. Elevator hoisting machine. In claim 7,
The tip end portion of the support shaft has at least one linear portion having a cross-sectional shape cut by a plane orthogonal to the axial direction;
An elevator hoisting machine, wherein an inner surface of the fixing collar has at least one flat portion having a cross-sectional shape cut by a plane orthogonal to the axial direction. In an elevator hoisting machine installation method for installing an elevator hoisting machine equipped with an electromagnetic brake device at an installation site,
The electromagnetic brake device is attached to a casing of the elevator hoist through at least two shaft members,
The shaft member has a support shaft that is inserted into the electromagnetic brake device and the housing and supports the electromagnetic brake device so as to be movable in an axial direction.
The electromagnetic brake device is removed from the elevator hoist and is carried into the installation site in a state where the support shaft is inserted and fixed in the electromagnetic brake device. How to install the machine.

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